Official titles are originally smelly and rotten things, so when you reach a high position, you will dream of coffins and rotting corpses.
Money is dirt, so if you get money, you will dream of dirty things.
The original version of the Duke of Zhou interprets his dream:
Dreaming that the coffin was broken and there was death. Dunhuang Dream Book
Dream of opening the soil and seeing the coffin and corpse. The patient dreamed that this was the most unlucky thing, and the person who sued was particularly unlucky. However, when the farm obtained this, the rice and millet were abundant and the wheat were harvested. When you see an auspicious coffin, you see a ferocious corpse. 'Dream Lin Xuan Jie'

(Editor in charge：naturally)